Digestive apparatus



1932- P. A. GOL'DFISCH A DIGESTIVE APPARATUS Filed Dec. 8, 1928 QINVENTOR.

j /W/Z'ofl flak/MM ATTORNEi.

Patented hazeieszit I a it 1,842,378

UNITED STATES :P ATENTYOFFICE] f 1 PI-IIL'IB A. GOLDFIS CHQ 01? msMissoiiiu i i DIGESTIVE mumm es. r

Application filerl December 8, 1928. Serial No. 324,790. 7 V

I This .inyentionrelates to digestive appara- .posed-ejector 13 having avertical-stack d);

tus 11S8d111 carry ng out the Kjeldahl procextending therefrom. j j j jV J ess andhas for its pr ncipal ob ect the pro- A blower 15, driven byany suitable motor vision of e ector'for the fume tube which will M, isin communication. with the ejector "l3 i 5 eliminateallbackflowof'fluids intothe fume through a tube'16. Tube 16 is in directcon-19 tubewhen the device isjinopcration nection with the restrictednozzle 17 which further object of this invention is the increasesthevelocity of the air'delivered V provision of adigestion apparatus havingan from said blower as it passes therethrough ejector for the fume tubewith a plurality of andis provided with a drain pipe 16. Nozstagesofejection, said ejector being integral zle 17 projects into an upwardlyconverging? 155 with said flame. f, tube '18 which terminates in anozzle 19, j Further. objects of the present invention slightly greaterin cross sectional areatthan are simplicity and economy ofconstruction,nozzle 17, that in turn extends into another e and uniformity. andreliability of operation; upwardly converging'tube :20 with a restricti5Withthese'generalobjects in view as well ed opening 21 slightly greaterin cross sec-41116 as minor objects which will appear during tional areathan nozzle 19 and having an out the course of the detailedspecification, refer turned flange 21 which meets the-outer wall encewill now be made to the accompanying 0&1: the ejector 13.. The tubes 18and 20 are drawingsin which spaced apart from the wall of ejector Rio I120 Figurel is side elevation of a digestive form a chamber 22 intowhich the .vaporsi I apparatus, partly broken away, embodying from thefume tube 11 is drawn by the sucthis invention; 1 j i V tion action ofthe ejector as hereinaftelxde- 1 vFig. 2 is a sectional View taken online. scribed. A series of openings 23 are formed i e "II-snot Fig. 1,with parts broken .away; inthc tube 18 adjacentthe upperendofnoz III-111 of Fig.2; j 1 have someot' the openings 23 extend slightly Fig. 4cisa fragmentary section taken on abovethe nozzle 17 to facilitate propercirline IV-IV of Fig. 3; j culation. ,The lower portion of tube 18,isFig. 5 is a horizontal section taken on line provided with drainopenings 24 which per VV of Fig. 3; and i i init the condensed vapor topass into thel'i75 h Fig. 6 isa modified form showing but a chamber 22to be carriedtherefrolnby means 1 single stage of ejection. V V i V of adrain tube 25 which communicates with Y Like reference charactersdesignate similar said chamber-belowthe fume tube 11. The partsthroughout the several Views and numtube'QO is also provided with aseriesofopengel-a1 l0 designatesa suitable support for the ings 26 whichcommunicate with chamber 122:180 {memb andejector apparatus; his athrough which vapors"fromsaidchamber 7 fume tube of a digestiveapparatus provid-i pass whenthe device is in operation; I edwithnozzle12 by means of which the flasks Drain openings 27 are also formed dia-(not :shown) are connected. Thedigestion centthe bottom of tube 20 forthe drain of 25 Fig. '3 is an enlarged section taken 011 line; zle 17.It has been found advantageous DQ153170 released in the fume tube. anddrawn thereproperly proportioned any desired number of from bymeans ofaventilationsystem; "Fume stages of ejection maybe useda tube 11 ispreferab1ydisposedin ahori- @The construction .asshown i Figyfiprozontal position and is integral withand in vides forbutone stagelofejection withlthe apparatus is of that type in which vapors are jliq uid therefrom; It is apparent that when" $7145! direct communication witha vertically distuhe 28provided.withjjainozzle29and ha ing t 7 into thefume tube.

a flange 3O Whichmeets the side wall of the ejector 13. Otherwise theconstruction is the same as that shown and described in the preferredform. v

In the operation of this device the heated vapors in the fume tube 11are drawn therefrom into chamber 22 through openings 23 and 26 by thesuction created by air from the blower being forced at a highrate ofspeed through the nozzles 17 and 19 and then through the restrictedportion 21 of tube 20 and into theslack 14 where it passes to the atinosphere. The air at room temperature and at a high velocity coming incontact with the vapors from the fume'tube gives partial condensation ofthe vapor in the e ector and throughout the length of the stack, thusdiminishing to a large extent, the-escape of strong vapors into the air.

The restricted opening 20 of the top tubes 20 is sufliciently large topermit the proper flow of air and vapor, but is too small to permitanyback flow of gases from the flue into the ejector and fume tube whichwould I greatly retard the action of the device, and

since tube 20 is flared at its top to completely close the flue from thechamber 22 except through tube 20, no gases-can escape back What'Icla-imis:

1. In a digestive apparatus of the class described, a fume tube, astack. an ejector havmg a housing connecting said fume tube with saidstack, a series of nozzles housed in said ejector housing and havingopenings formed through the walls thereof, means for forcing afi'uidthrough said nozzles to draw fluids from said fume tube through saidopenings into said nozzles, and a restricted nozzle at the mouth of saidejector through which all I of the fluid forced from the fume tube tothe stack must pass, and means for draining liquid from said ejector.

2. In a digestive apparatus of the class described a fume tube a stack,an ejector having a housing connecting said fume to said stack, a seriesof cooperating conical shaped nozzles positioned within said housing andspaced apart from the inner walls thereof to form an outer chamber, eachof said nozzles having its discharge end restricted and extended intothe next ad acent nozzlerespec- .tively, openings formed in the wall ofsaid uid from said nozzles is drained into said nozzles in transversealignment with the end 'of its respective inserted nozzle, drainopenings formed through the wall at the lower'extremlty of each of saidnozzles whereby liq outer chamber and a tube communicating with saidouter chamber whereby'liquid-is drained'therefrom and an outturnedflange integral with the top nozzle of said series adapted to engagetheouter-wall of the ejector to completely close the spacebetween thenozzle and the housing of the'ejector.

signature.

PHILIP A. GOLDFISCH.

